Metal structure



L. A. DANIELS.

METAL STRUCTURE.

APPLICATION men NOV-25,1919.

' Patented Feb. 17,1920.

Patented Feb. 17, 1920.

-SHEET 2 2 SHEETS L. A. DANIELS.

METAL STRUCTURE.

APPLICATION FILED NOV-25.1919.

LESLIE ARCI-IIBALD DANIELS, OF LEE, LONDON, ENGLAND.

METAL STRUCTURE.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Application filed November 25, 1919. Serial No. 340,577.

.ferro-concrete construction such as is employed for building purposes and for ferroconcrete shlps.

According to the invention the structure comprises a member of hollow triangular form made by bending a metalsheet of suitable thickness into the shape of a triangle with flanges at the apex by which the triangular member thus formed may be riveted or otherwise attached to a suitable connecting member preferably disposed between the twoflanges. This connecting member'may take the form of a metal plate whose portion that projects beyond the of the flanges is slit and the two parts thus formed are bent in opposite directions to form angle pieces wi h the main portion disposed between and riveted to the flanges, these angle piece. being riveted to any convenient part of the structure, for instance to a diamond shaped connecting plate by which a vertical triangular member, for example, can be connected to two horizontal members of similar formation disposed in line with each other parallel to the base portion of the vertical member and arranged one on each side of the said vertical member. The aforesaid connecting member may also take the form of aplate one edge of which is riveted between the two flanges of one triangular member and another edge or portion of which may be riveted betweenthe flanges of a second triangular member arranged parallel or atany desired angle to the first mentioned member. In this manner a vertical triangular member for example can be connected to two horizontal triangular members disposed at right angles to the two horizontal triangular members referred to above, or-

girders can be constructed with the connecting plate constituting the web portion and the triangular members constituting the flanges. Two of the said triangular members may be arranged back to back and riveted together so as to provide a stronger and more rigid construction and to enable the double triangular member thus formed to be connected at opposite sides to other members which may be of similar construction or may be of the single triangular formation first described. At the portions along the length of the triangular members unprovided with connecting members, the flanges may be separated by a number of short distance pieces or washers which are riveted between the flanges and thus provide interstices for the concrete when the structure is used in ferro-concrete construction.

In order that the said invention may be clearly understood and readily carried into effect, I will describe the same more fully with reference to the accompanying drawings, in which Figure 1 is a perspective view showing diagrammatically a form of the invention and illustrating its use in connecting a double triangular vertical member to two horizontal members of similar formation disposed in line with each other parallel to the base portion of the vertical member and arranged one on each side of the latter member.

Fig. 2 is a view similar to Fig. 1 showing another form of the invention and illustrating its use in connecting a double triangular vertical member to two horizontal members of similar formation arranged at right anglee to the two horizontal members of Fig. 1.

Fig. 3 is a side elevation showing more in detail the constructions illustrated in a perspective manner in Figs. 1 and 2.

Fig. 4 is a view similar to Fig. 3 but showing the lower horizontal members as being of single triangular form and also showing the manner in which the construction is adapted for ferro-concrete purposes used, for example, in building.

Fig. 5 is a sectional side elevation of Fig. 4 with the diamond-shaped connecting plate removed so as to show more clearly certain details.

Fig. 6 is a sectional plan showing a form of the invention as applied to the stem of a fe'rro-concrete ship.

' Fig. 7 is a vertical section showing a form of the invention as applied to a ferro-concrete ship.

Fig. 8 is a transverse section showin a. modified form of the connecting plate 11V- angular vertical member at right angles plate C. This arrangement will be clearly v understood by reference to the upper poreted between the flanges of the triangular I flanges of the bars and thus avoids liability of the said bars becoming distorted from.

member, and

Fig. 9 is a transverse section showing a modified arrangement of attaching the connecting member to the triangular member.

Referring first more particularly to Fig. 7

1,. A, A are two single triangular 'ertical members riveted back to back toftorin the aforesaid double triangular vertical mem her and B, B are the elements of two double triangular horizontal members similarly constructed and connected to the double trithere'to'and parallel to the bases of the triangular members A, A. G is the diamondshaped connecting plate which is attached to the vertical and horizontal members by means of a number of metal plates C which are disposed between and riveted to the flanges and whose portions that project beyond the edges of the flanges are slit and the two parts thus formed are bent in opposite directions to form angle pieces with the main portion, these angle pieces being riveted to the diamond-shaped connecting tions of Figs. 3, i and i5. V g In Fig. 2, A indicates the double triangular vertical member constructed as in Fig. 1

and D, D are the double triangular horizonlar member is riveted to the outside, of the closed flanges, two such connectingmembers tal members which are disposed at right angles to the members B. B of Fig. 1. In this construction the connection between the member A and eachof'the members D eifccted by aconnecting plateD whose edge is disposed between and riveted to the flanges of the member A and whose projecting portion tails of thisconstruction are shown in Fig. 0 and also in Figs. -1- and '5'; in thejlatter case,

. however, the horizontal members are of single triangular formation and the connect-v ing plate D r 'does notproject into a'slot termed in thebase of this member but is disposed as shown'by the dotted lines in Fig. l

"I'I'Il Figs. and 5 l'atticebars E are shown connecting the member D. to other similarmembers and these bars are of triangular formation with p-ro ecting flanges as shown- The means of connection between the bars E and themembers D comprise, in the example shown, plates Dziwhich are riveted to the 'base'xof the member D and whiclrhave projecting portions to which the flanges of the bars 1* are riveted. These bars are used in connection with term-concrete construction to provide gripping surfaces. for the con crete. In order to prevent these bars from becoming deformed I provide at suitable points along their length a clip stripsEl one ofwhich is shown at the right hand side angular members A, A

ofFig this ,clip'strip is bent over the angular t'orni such as is shown in Figs. 2

and 3 the lower one of the'twotrian 'ular membersi'iveted baclr to back carries between its flanges one or more supporting plates for the bars which are riveted to the said supporting platesin the manner de:

scribed with reference to Figs. t c nd 5.; This supporting plate may 11 desired be in the 'form. shown in Fig. 8 (but inverted) -'in which a plate F is shown as being bent back upon itself to form a double thicknesswhich is riveted between the flanges of the triangular member. i

j The flanges of the various triangular membersfare shown as being separated by smalldistance piecesor washers a which are riveted between the flanges. The provision of these distance pieces instead'of'a continuons separating plate, results in a lightening of the structure and also provides interstices :for the concrete when the 'struc-' ture'isused 1n ferro-concrete construction.

In the modification shown by Fig. 9, the; connecting member F instead of b81115" riveted between the flanges of the triangubeing preferably employed as sliownwhich maybe similarly riveted to another triangular member or to an intermediate plate.

In Fig. 6 which, shows the invention. ap

plied: to. the stem of a concrete ship, the

. flanges of the triangular member A are riveted to the central rib G of a bar ofT section forming the stem bar of theishi and of the shipare built, up of. longitudinaltri connected by p'lates H, H to other triangular members A", A* the said plates being riveted between the flanges of these members. Horizontal and'yertical triangularniembersA A are connected to the members A, 'A as shown and are also connected to the plates H, H by angle plates H%, H (which may be corrugated); riveted between the flanges of; the members'A, A.

Secondary framing. (not shown)- may be provided between the various" triangular members and-this 'framingmay be constituted'by bars similar to the lattice bars of- .FigsAand 5; 1 Q f A sire-concrete vessel in which reinforcingmembers of'theabove type are employed cfan be made of great strength with minimum weight, asthe hollow triangular section of the members A adapted to withstand heavy stresses in all directions; the said members are adapted for use in various parts of the vessel as well as in the typi cal portions already referred to and are preferably left unfilled with the cement.

The structure hereinbefore described and shown in the drawings is intended only to be examples of the use of my invention and it is to be understood that the invention may be used in connection with other forms of metal structures; for example, in the construction of girders generally, a formation similar to that of the member A, A and the plates H of Fig. 7 could be employed and in the construction of ladders the longitudinal members would be of triangular form as hereinbefore described and the rungs would be constituted by metal tubes flattened at their end portions for riveting between the flanges of the triangular members.

lVhat I claim and desire to secure by Letters Patent of the United States is 1. A metal structure for building purposes comprising two members, each of hollow triangular form closed at the base and having parallel flanges at the apex, and means uniting the bases of said members.

2. A metal structure for building purposes comprising two sheet metal members, each bent into substantially triangular form with the edges separated at the apex, and rivets uniting the base sections of said members.

3. A metal structure for the purposes described, comprising a sheet metal member bent into substantially triangular form with opposite edges forming separated flanges at the apex, and a plate riveted bet-ween said flanges and projecting therefrom to form a connecting means, the projecting portion of said plate being slit and having the parts separated by the slit bent in opposite directions.

A. A metal structure for the purposes described, comprising two sheet metal members each bent into a hollow triangular form with separated flanges at its apex, means connecting the bases of said members, and a connecting member in the form of a plate having one of its edges inserted between the flanges of one of said triangular members and riveted to said flanges.

5. A metal structure for the purposes described, comprising a sheet metal member bent into hollow triangular form with spaced flanges at its apex, and a plurality of distance pieces inserted between and riveted to said flanges.

6. A metal structure comprising in combination a column formed of two metal members, of substantially triangular form in cross section, secured together at their bases and each provided with spaced flanges at its apex, plates extending between and riveted to said flanges of each said member, the portion of each plate that projects from said flanges being slit and having the parts separated by said slit bent in opposite directions, a beam formed of two members similar to those of the column and extending at an angle to the latter, plates riveted between the flanges of the beam members and having a slot formed in the projectin portions thereof and the parts separated by the slit bent in opposite directions, and connecting plates riveted to said bent portions of the column and beam plates.

7 A metal structure comprising in combination a column formed of two metal members, of substantially triangular form in cross section, secured together at their bases and each provided with spaced flanges at its apex, plates extending between and riveted to said flanges of each said member, the portion of each plate that projects from said flanges being slit and having the parts separated by said slit bent in opposite directions, a beam formed of two members similar to those of the column and extending substantially at right angles to the latter, plates riveted between the flanges of the beam members and having a slit formed in the projecting: portions thereof and the parts separated by the slit bent in opposite directions, connecting plates riveted to said bent portions of the column and beam plates, and a second similarly formed beam extending at an angle to and secured to the first said beam.

LESLIE ARGHIBALD DANIELS. 

